added swedish translation

[TechSubham]

• [ ✅] I signed and returned the Plone Contributor Agreement, and received and accepted an invitation to join a team in the Plone GitHub organization.
• [ ✅] I verified there aren't other open pull requests for the same change.
• [ ✅] I followed the guidelines in Contributing to Volto.
• [ ✅] I succesfully ran code linting checks on my changes locally.
• [ ✅] I succesfully ran unit tests on my changes locally.
• [ ✅] I succesfully ran acceptance tests on my changes locally.
• If needed, I added new tests for my changes.
• If needed, I added documentation for my changes, either in the Storybook or narrative documentation.
• [ ✅ ] I included a change log entry in my commits.

Closes #5957

[netlify]

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[TechSubham]

I have passed all the tests , i request someone to review the changes